Impeller for a fan

Abstract

An impeller for a fan having a hub that can be easily fastened to a shaft is disclosed. A multiplicity of vanes is fastened to the hub. At least one elastic damping body is provided in the hub between the receptacle and the vanes to damp the transfer of vibrations from the shaft to the vanes, and prevent vibration of the vanes relative to each other. A slotted central sleeve in the inner section of the hub forms the receptacle for the shaft and is surrounded by an annular spring.

1 - 15 . (canceled) 
     
     
         16 . An impeller for a fan having a shaft, said impeller comprising:
 a plurality of vanes;   a hub having an outer ring to which the vanes are fastened and an inner section in which a receptacle for the shaft is formed;   at least one elastic damping body arranged between the receptacle and the vanes that connects the inner section of the hub to the outer ring of the hub; and   a slotted central sleeve in the inner section of the hub, said slotted central sleeve forming the receptacle, said slotted central sleeve being surrounded by an annular spring.   
     
     
         17 . The impeller of  claim 16 , for use in a domestic appliance. 
     
     
         18 . The impeller of  claim 16 , wherein the damping body occupies an annular intermediate space between the outer ring of the hub and the inner section of the hub. 
     
     
         19 . The impeller of  claim 16 , wherein a plurality of damping bodies are arranged in a circumferentially distributed manner in an annular intermediate space between the outer ring of the hub and the inner section of the hub. 
     
     
         20 . The impeller of  claim 19 , wherein the ring has recesses in which the damping bodies positively engage. 
     
     
         21 . The impeller of  claim 20 , wherein the recesses are undercut. 
     
     
         22 . The impeller of  claim 16 , wherein the inner section has recesses in which the damping bodies positively engage. 
     
     
         23 . The impeller of  claim 22 , wherein that the recesses are undercut. 
     
     
         24 . The impeller of  claim 16  wherein the damping body is made of a material having a higher elasticity than the outer ring of the hub. 
     
     
         25 . The impeller of  claim 16  wherein the damping body is made of a material having a higher elasticity than the inner section of the hub. 
     
     
         26 . The impeller of  claim 25 , wherein the material of the damping body is a silicone or a rubber. 
     
     
         27 . The impeller of  claim 16 , wherein the damping bodies are connected in one piece with the outer ring of the hub and the inner section of the hub. 
     
     
         28 . The impeller of  claim 16 , wherein the inner section of the hub comprises an annular wall running annularly around the sleeve at a distance. 
     
     
         29 . The impeller of  claim 28 , wherein the central sleeve and the annular wall are connected in one piece. 
     
     
         30 . The impeller of  claim 28 , further comprising a connecting piece arranged at an end face of the hub for connecting the central sleeve to the annular wall. 
     
     
         31 . The impeller of  claim 16  wherein at least one damping body is arranged in an annular intermediate space between the outer ring of the hub and the inner section of the hub so that the at least one damping body is axially offset relative to the spring. 
     
     
         32 . A fan, comprising:
 a shaft;   an impeller having a plurality of vanes;   a hub having an outer ring to which the vanes are fastened and an inner section in which a receptacle for the shaft is formed;   at least one elastic damping body arranged between the receptacle and the vanes that connects the inner section of the hub to the outer ring of the hub; and   a slotted central sleeve in the inner section of the hub, said slotted central sleeve forming the receptacle, said slotted central sleeve being surrounded by an annular spring.